Katadyn Vario: Adjustable Water Filter

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Most backcountry water filters rely on one of two technologies: ceramic filtration and pleated fiber filtration. Ceramic filters have a long lifespan and can be repeatedly cleaned if they become clogged, but have a slow flow rate and can be difficult to pump. Pleated fiber filters do the same job with a faster flow rate, but they can become clogged with silt and other solids and are not cleanable....